Thermally deformable austenite nickel-chromium-iron alloy with high oxidation resistance and thermal strength

摘要

A heat-formable, austenitic Ni-Cr-Fe alloy having very good oxidation stability and heat resistance, as are desirable for advanced heat conductor applications, is proposed, which alloy starts from the known heating element alloy NiCr 60 15 and in which considerable improvements of the properties during use can be achieved by coordinated modifications of the composition. The alloy differs from the known material NiCr 60 15 in particular in that the rare earth metals are replaced by yttrium, that it additionally contains zirconium and titanium and that the nitrogen content is matched with the contents of zirconium and titanium in a particular manner.